Photographic printing method and photographic printer

Abstract

Trimming prints are made from a plurality of image frames in photographic film, in order of trimming magnification, by reading out trimming magnification data for each frame as well as frame position data used for positioning each frame. The adjustment of the focal length of a zoom lens is effected in the order changed following the order of the trimming magnification so as to make a series of prints in the shortest time. In accordance with a preferred embodiment of the invention, frames are printed in the order of the permutation, yielding the shortest processing time in rearrangement of the sequential frames. Therefore, efficiency is improved greatly in shifting the frames and adjusting the focal length of the zoom lens.

What is claimed is: 
     
       1. A method for making a trimming print on photographic paper from a frame of photographic film in accordance with trimming magnification data indicating a degree of magnification said method comprising the steps of: reading out said trimming magnification data for each frame of a series of frames in said film; and   printing said series of frames in exposure in an order determined on the basis of said read-out trimming magnification data so as to minimize necessary adjustment of a zoom lens between any two of said frames to be printed.   
     
     
       2. A method as defined in claim 1, wherein said order follows an increasing order of said degree of magnification. 
     
     
       3. A method as defined in claim 1, wherein said order follows a decreasing order of said degree of magnification. 
     
     
       4. A method as defined in claim 1, further comprising the step of recording trimming magnification data on said film at the time of photo-taking with said film in correspondence with each of said frames. 
     
     
       5. A method as defined in claim 4 further comprising the step of using a zoom lens to make said trimming print. 
     
     
       6. A method for making a trimming print on photographic paper from a frame of photographic film in accordance with trimming magnification data indicating a degree of magnification, said method comprising the steps of: reading out frame position data and said trimming magnification data for each frame of a series of frames in said film;   obtaining permutations by rearranging frames of said series;   calculating processing time to be taken by each of said permutations based on a length of time necessary to shift said film from one frame to a frame rearranged adjacent thereto and a time to change said trimming magnification degree;   selecting one of said permutations that takes the shortest processing time of said permutations; and   printing said series of frames in exposure in an order following said specified permutation.   
     
     
       7. A method as defined in claim 6 further including the steps of: comparing said film shifting time between said adjacently rearranged frames and said magnification changing time;   determining a frame processing time of said one frame as equal to the longer of said shifting time and said changing time in accordance with the result of said comparison; and   obtaining said processing time by adding together each frame processing time for respective frames of said series.   
     
     
       8. A method as defined in claim 7, wherein said trimming magnification data are recorded on said film at the time of photo-taking with said film in correspondence with each of said frames. 
     
     
       9. A method as defined in claim 8 further comprising the step of using a zoom lens to make said trimming print. 
     
     
       10. A photographic printer for printing a frame at a specified trimming magnification by use of photographic film with data as to a degree of trimming magnification recorded thereon in correspondence with each of the frames, said printer comprising: means for reading out said trimming magnification degree data for each frame of a series of frames in said film;   means for determining an order for printing said series of frames in an order based on said degree of trimming magnification read out by said reading-out means; and   a zoom lens changeable as to a focal length in accordance with said read-out trimming magnification.   
     
     
       11. A photographic printer as defined in claim 10, wherein said order follows an increasing order of said trimming magnification. 
     
     
       12. A photographic printer as defined in claim 10 wherein said order follows a decreasing order of said trimming magnification. 
     
     
       13. A photographic printer for printing on photographic paper a frame in photographic film with data as to a degree of trimming magnification recorded thereon in correspondence with each of the frames by use of a zoom lens with the focal length set in accordance with a specified trimming magnification, said printer comprising: means for reading out frame position data and said trimming magnification degree data for each frame of a series of frames in said film:   means for obtaining permutations by rearranging frames of said series;   means for calculating processing time to be taken by each of said permutations obtained by said permutation obtaining means based on a length of time necessary to shift said film from one frame to a frame rearranged adjacent thereto and a time to change said degree of trimming magnification on the basis of said frame position data and said trimming magnification data read out by said reading-out means: and   means for specifying a permutation taking the shortest processing time of said permutations calculated by said time calculating means, said specified permutation being followed as an order for printing said series of frames.   
     
     
       14. A photographic printer as defined in claim 13, wherein said time calculating means comprises means for comparing said film shifting time between said adjacently rearranged frames and said magnification changing time, means for determining frame processing time of said one frame as equal to the longer of said shifting time and said changing time in accordance with the result of said comparison, and means for obtaining said processing time by adding together each frame processing time for respective frames of said series.